<!DOCTYPE html>
<html lang="en">

    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>视口PI</title>
        <link rel="stylesheet" href="styles.css">
    </head>

    <body>
        <div class="container">
            <h1>无限滚动</h1>
            <div id="content" class="content"></div>
            <div id="loading" class="loading">加载中...</div>
            <div id="sentinel" class="sentinel"></div>
        </div>
        <script src="script.js"></script>
    </body>

</html>